Tread attachment for wheels



g c. B. MOORE TREAD ATTACHMENT FOR WHEELS Fiied June 25. 1926 OOIQ,awuemlioz Patented Aug. 9, 192?.

easily a afford a the same sinking into sandy or roads. An ob ect of theinvention is to for the stated purpose provioe a device which, whenapplied to so CllSPOZGd that there .S be an appreciable fiat treadportion presented to the ground to provide a firm support the wheel andobtain effective The invention provides a tread member which may bereadily applied to moved from the wheel and will conform to thecurvature of the wheel rim. The invention is illustrated in the HCCOIUpnying and will be hereinafter f forth, the novel features beingparticularly pointed out in the appended claims.

drawing In the drawing Figure 1 is a side elevation of a portion of awheel showing the application of my invention thereto Fig. 2 is a planview of a portion of the attachment removed from the wheel;

Fig. 3 1s a transverse section on the line 3-3 of Fig. 1.

The wheel, a por equal proj ect understood 2 of the drawing, toaccommodate the varyangular relation of the parts. The chain of blocksand coupling links may ing NETE tion of which is indicated at 1 may beof any approved design. In carrying out the present inventiomthere aresecured in the rim 2 of the wheel at distances throughout its circumference callrs 3 which project radially from the rim and are so disposedbetween the adjacent endsof two members of the attachment and therebyaid in preventing the attachment-slipping circumferentially of thewheel. These projections or calks also are adapted to enter the surfaceof the ground and aid in the traction of the wheel. ment comprises anendless chain of blocks 4: which have fiat inner and outer faces and arerectangular in outline, as clearly shown in the drawing. connected endto end by links 5 which are disposed at the opposite sides and oppositeends of the blocks and have their own ends pivotally and slidablyattached to edges of the respective blocks, as will be upon reference toFigs. 1 and by res CHARLES B. MOORE, OF MAT'I'QON; ILLINOIS.

BREAD ATTACHMENT FOR. WHEELS.

Application'filed June 25, 1926. Seria1 No. 118,531.

r .ch may be muddV chains of blocks will ground and for always havetraction.

thereinto. connected side by 6 inserted through bloclrs so that the twowheel.

cured upon the inner rim. Nuts that they will ground. verse straps 11,it will The tread attachpensed with. These blocks are the side its usemay or soil and may move over thus be disposed about the w in Fig. l,and will readily conform to circumference of the wheel so as tocompletely encircle the same. narrow, a single chain of tread blocks maybe sufiicient but ordinarily two parallel be employed and the blockswill be' so disposed as to break'joint whereby there will always be atleast one block presented tiat'to the surface of the the wheel will,consequentl, a broad bearing upon the ground and will be prevented fromsinking The blocks in the two chains are 70 side by transverse bolts theblocks adjacent the ends thereof with sufficientlooseness to permit theblocks to move pivotally with re Spacing sleeves 7 are fitted upon thesebolts between the adjacent; chains or series of tread blocks will bemamtained in a fixed spaced relation and thereby be maintained in theproper relation to if the wheel rim is unusually wide,

may be inserted through openings provided From the foregoing descriptconnectlon with the accompanying mg, it will be seen that I haveprovided a 1,63 PATENT oFF ca.

bolts so as to prevent, them dropping the wheel or the retaining straps11 are adjusted so that am bolts will be permitted to accommodate theshifting angular pivotal mov blocks as they successi the the rim of theI also-provide a plurality of eye bolts 8 which have their eyes 9engaged around the ends of tlie bolts 6 and held which also serve to thetread blocks. These eye bolts 8 are disposed radially with respect tothe wheel and :pass loosely through transverse straps 11 which areseside of the Wheel 12 are fitted upon these eye from but ple play forthe ement of the vely engage the Vhile I have shown the trans beunderstood that, the bolts therefor in the rim and the said straps dision, taken in drawvery simple attachment which may be easilyv applied toor removed from a wheel as may not be necessary, and the use of which asubstantial tread sur face will be afforded the wheel and it will beprevented from sinking in soft or sandy the same without If the wheel isclaim:

1. A tread attachment for Wheels comprising parallel series of flatblocks, links pivotally connecting the opposed ends of adjacent blocksin the respective series, retainingelements pivotally engaged throughthe blocks of the respective series adjacent the ends thereof, andspacing means carried by the said elements between adjacent blocks ofthe two series.

2. A tread attachment for Wheels com prising parallel series of flatblocks, links pivotally coupling the opposed ends of adjacent blocks inthe respective series, the blocks and links being arranged to breakjoint, pivot members inserted transversely through the blocks near theends thereof whereby to 20 connect the blocks side by side, spacingelements disposed between the opposed edges of adjacent blocks, carryingdevices pivotally engaged at their outer ends with the eral blocks, andmeans for loosely retaining 25 I the said elements upon a wheel rim.

3. A tread attachment for Wheels comprising a series of fiat treadblocks, links pivotally connecting the opposed ends of adjacent blocks,straps to be secured transversely upon a Wheel rim, and eye boltsmounted through the ends of said straps and pivotally connected at theirouter ends to the respective blocks adjacent the ends of the same.

In testimony whereof I affix my signature.

CHARLES B. MOORE. [1 s]

